Flasher analysis possible after accident

Hello, I’m not sure if it’s right in this forum, but since I’m mainly here I wanted to hear your opinion. I had a traffic accident last year, which led to a court hearing last week. The main issue was, among other things, whether my opponent flashed (as he claims) or not (as I claim). After the accident, all 4 turn signals were functional, because he immediately got the warning blinkanl after the crash. Now, in court, his lawyer drew out an expert’s report stating that my opponent had flashed to the left shortly before the accident. Now, my question. Can the assessor use an analysis (however he does it) to find out if the turn signal was on right before the crash, although all the turn signals were still working after the crash? To my knowledge, such an analysis is only possible if the turn signals are damaged. Where does the assessor want to know if the turn signal was activated? I asked acquaintances who are in the car business, nobody thought it was possible. Short accident signs: I followed a BMW (accident opponent) on a narrow road. Suddenly he pulled to the right and braked without blinking (My statement. He said he had flashed to the left and had oriented himself towards the middle, which is not possible, since the road s o narrow is that I certainly did not pass by.). I suspected that he would park, blinked left and pulled past him to the left. However, the BMW drove out only to the right to strike a bow so that he fits into his narrow driveway on the left side. He drove sharp left, and it came to the crash. If necessary, I carry out even more detailed. Regardless of the trial, where his wife as a witness obviously did not tell the truth, above described Sachverha It is very interesting. Thank you very much already greeting Kuddemuddel